/*
 * Copyright 2019. Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.android.apps.santatracker.cityquiz

import com.google.maps.android.SphericalUtil
import java.util.Comparator

/** Compare the distance between two Cities and the City of this comparator.  */
class CityLocationComparator(private val city: City) : Comparator<City> {
    override fun compare(c1: City, c2: City): Int {
        val dist1 = SphericalUtil.computeDistanceBetween(
                city.correctLocation, c1.correctLocation)
        val dist2 = SphericalUtil.computeDistanceBetween(
                city.correctLocation, c2.correctLocation)
        return dist1.compareTo(dist2)
    }
}
